Comins Coch, Aberystwyth: Remnants of ancient volcanoes still dominate the skyline, though much less sharply than in La Palma’s younger landscape

The path up to the old quarry was wet and bordered by clumps of coarse grass, droplets of dew still hanging on to each blade. Beyond the line of trees that marks the edge of the field, dark and skeletal in their winter stasis, the sky was mottled with cloud that looked distinctly untrustworthy, with the stillness to the air that often presages showers.

Exposed on the steep back wall, grey and tarnished with flecks of iron, the ancient mudstones are too soft and easily fractured for fine building work, but the quarry served as a useful source of stone for local roads. Now abandoned, it has been out of use for long enough that mature oak trees have grown from the rounded heaps of spoil, banks of gorse – already in flower – adding bright yellow highlights.